Attachment for fan ming-mills



, 2 Sheets- Sheet 1.

(No Model.) J.HBRS0N.

ATTACHMENT FOR FANNING MILLS.

Patnted May 5, 1891.v

. 1|. 1 l I J .l u p W x 1 m A (No Model.) 2 Sheets-Sheet 2,

J. HERSON. ATTACHMENT TOR TANNTNG MILLS.

No. 451,670. Patented May 5, 1891.

very simple and efficient device by UNITED STATES PATENT OFFICE.

ASSIGNOR TO SIDNEY COLE, VILLIAM y AND JAMES H. MCKENNEY, ALL OFATTACHMENT FOR FANNlNG-IVIILLS.

SPECIFICATION forming part of Letters Patent No. 451,670, dated May 5,1891.

Application filed March To aZZ whom if; may concern:

Be it known that I, 'JOHN HERSON, a citi- Zen of Canada, residing atPort Huron,in the county of St. Clair and State of Michigan, haveinvented certain new and useful ImprovementsinAttachmentsforFanning-Mills, (for which I have obtained patent in Canada, No.24,883, September 4, 1886; in Belgium, No. 14,827, .I une 29, 1887, andin Austria-Hungary, No. 76,667, March 3l, 1887;) and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specification. Y

The object of my invention is to provide a the use of which allimpurities will be removed from a mass or mixture of grain and the grainseparated into its different grades or kinds by a single operation andto accomplish this obj ect by means that are not complicated and liableto get out of order. These objects I accomplish by the use of themechanism illustrated in the annexed drawings; and the inventionconsists in certain novel features of the same, as will be hereinaftermore fully set forth, and particularly pointed out in the claim.

In the drawings referred to, Figure l is a rear elevation of afanningmill provided with my improvements. Fig. 2 is a longitudinalvertical section of the same, and Fig. 3 is a detail perspective view ofthe shoe and the tapper.

The casing A or frame of the mill is of the usual or any preferredconstruction, and the fan B is mounted in the front end thereof in theusual manner.

A hopper C is arranged in the top of the frame, and the grain is placedin this hopper when the mill is to be operated, as will be readilyunderstood.

In the drawings I have shown a slide D mounted on the under side of thetop of the frame so as to cover or uncover the opening in the hopper atwill; but it is obvious that Patented in Canada September 4, 1886, No.24,883; in Austriaand in Belgium June 29,18S7,No.14,827.

this slide is not essential and forms no partk of my invention.

IVithin the frame and-near the rear end of the same I provide a gang Eof sieves or screens, which consists of the side plates F and the sievesor screens G, secured between them. This gang of sieves is hung withinthe frame, so as to have a slight vibration by means of the straps H,having their upper ends secured to the inner sides of the side walls of,the frame and their lower ends secured to the side plates of the gangnear the lower edges thereof.

At the upper end of the gang of sieves I arrange a defiector or slide I,which is inclined toward the rear end of the gang, and is adapted toextend under the opening of the hopper so as to cause the grain to rundownward toward the rear end of the gang of sieves as it comes from thehopper. Below the detleotor or slide I provide a sieve or screen J,which is arranged at a less pronounced inclination than the slide ordeflector, and has its rear end projecting beyond the rear end of theframe or gang and provided with a spout or oat-arrester K, as shown. Thechaff contained in the grain will be blown over the end of the sieve andthe spout by the current from the fan, and the oats will be deposited inthe spout and thereby carried to one side and collected.l It willconsequently be understood that this screen with the spout is used onlywhen it is desired to remove oats from the wheat and at the same timegrade the wheat.

Below the sieve or screen .I and at the rear end` of the gang I providethe substantially parallel screens or sieves L M, which are inclineddownward toward the front end of the gang. These screens are ofdifferent meshes, the upper one beingl the larger, and also of differentsizes, the lower one being the shorter. These substantially parallelscreens or sieves are arranged adjacent to and above a metallic shoe N,which forms the bottoni of the gang or screen frame. This shoe isprovided at its front end with the delivery-spouts O l? Q, which extendin opposite directions, and are adapted to convey the differentqualities or kinds of grain to the proper receptacles. The foremostspout receives the grain which fails to pass through the screen or sieveL, the intermediate spout receives the grain that passes over the end ofthe screen or sieve M, and the rearmost spout receives the grain thatdrops through the sieve M and falls onto the shoe.

The sieve M is the finest sieve or screen of the lot, and consequentlythe grain that passes therethrough will be of the finest grade. In orderthat none of this grain may be lost by failing to pass through thesieve, I provide a tapper R, which consists of a rock-shaft S, mountedin suitable bearings on the shoe, and the striker-arms T, extending,rlaterally therefrom. A pulley U is provided at the rear end of therock-shaft, and a belt or band V is passed tightly over this pulley andthen downward through the rear end of the shoe, after which its ends arecrossed and secured rigidly to the rear end of the casing or frame ofthe mill, as clearly shown in Figs. l and 3.

The fan and the gang of sieves are operated in the usual manner, thesieves being vibrated transversely of the mill. As the gang of sieves isthus caused to swing from side to side of the mill, the pulley U will beforced to travel under the belt or band passed thereover, andconsequently the rock-shaft will be oscillated,and the striker-armscaused to impinge against the bottom sieve or screen, and thus loosenthe grain thereon, so that none of it can collect. All of the grain willthus be agitated and the finest grade made to pass through the sieveonto the shoe, whence it passes to the proper receptacle, as will bereadily understood from the foregoing description taken in connectionwith the annexed drawings.

It will be noticed upon reference to the drawings that the lower screenshave their front ends resting upon transverse partitions, so that noneof the grain that passes over their front ends can mingle with thatwhich passes through their meshes, thus insuring the maintainingoftheseparated grains in distinct lots.

It will be seen from the foregoing description, taken in connection withthe accompanying drawings, that I have produced an extremely cheap,simple, and efficient device by the use of which all impurities will beremoved from the grain and the grain separated into its severalcomponent grades or kinds at a single operation. The several parts of myimproved mill are arranged in a very compact manner, and at the sametime they are readily accessible for the purposes of cleaning orrepairing. The shoe employed by me presents in a single element a bottomfor the gang of sieves and also deliverysponts for the several grades ordifferent kinds of grain in the mixture, all of which, except the onedelivered by the spout K, are delivered to their proper receptacles bythe shoe. The tapper at the rear end of the shoe is a very importantelement of my invention, as it positively prevents any grain collectingon the bottom screen or sieve and clogging the meshes thereof, and isautomatic in its operation. Each screen or sieve in my mill serves toseparate one grade or kind of grain from the mass and deliver it t0 theproper' deliverf-spout. It is my intention in practice to furnish ineach mill a series of sieves of different sizes and meshes, so that theowner can quickly arrange the mill for separating any kind of grain intoits several grades, or for separating the different kinds of grain fromeach other and from the impurities when mingled.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

The combination, with the casing and the gang of sieves, of the shoeforming the bottom of the said gang, the tapper mounted on said shoe andprovided with a pulley at its rear end, and the belt or band passed overthe said pulley and having its ends crossed and secured to the casing,as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN UERSON.

\Vit11csses:

THOMAS MCGUIGAN, EDWARD MCKENZIE.

